The CBOT started the week on a high noted in early trade, but the soy complex quickly turned lower and pulled old crop corn futures lower too. Wheat was the stalwart for the day with both the KC and Chicago markets posting 30-35-cent gains. Funds were net buyers and index/investment funds continue to add exposure to the market. The Goldman roll finished its third day on Monday and will wrap up this week. World grain fundamentals remain broadly bullish and the continuing influx of investment indicates the CBOT will keep grinding higher.  La Nina is strengthening again with the latest models indicating a 53-60 percent chance that the weather trend continues into July and August. That implies hot, dry conditions over the western U.S., in...